{"id":20774,"date":"2023-04-26T07:19:37","date_gmt":"2023-04-26T07:19:37","guid":{"rendered":"http:\/\/localhost\/git\/blackrock\/?post_type=application-story&#038;p=20774"},"modified":"2023-05-12T21:05:20","modified_gmt":"2023-05-12T21:05:20","slug":"animal-research-story-decoding-spatial-locations","status":"publish","type":"application-story","link":"https:\/\/blackrockneurotech.com\/story\/animal-research-story-decoding-spatial-locations\/","title":{"rendered":"Shape perception via a high-channel-count neuroprosthesis in monkey visual cortex"},"content":{"rendered":"\n<section data-section-sidemenu-title=\"Human BCI Research\" data-scroll-section class=\"application-story-detail-anims default-section-anim title-img-txt-content-inner-section prel\">\n    <div class=\"max-w-container op-0 w-1920 offset-x-mobile-16 offset-x-desktop-323 prel\">\n\n            <p class=\"upper fade-in-left txt-size-14-m txt-size-18 fw-700 lh-1 c-gold-100 section-info-title ltr-spc-neg-0_005\">\n            Animal Research        <\/p>\n        <h1 class=\"section-title fade-in-left c-black-100 lh-0_95 ltr-spc-neg-0_01 ff-settings txt-size-80 txt-size-46-m ff-gt-super fw-400\">\n            Shape perception via a high-channel-count neuroprosthesis in monkey visual cortex        <\/h1>\n        <div class=\"img-txt-content-wrap\">\n            <div class=\"txt-content\">\n                <h2 class=\"section-title-inner fade-in ff-gt-super fw-400 lh-1_2 ltr-spc-neg-0_01 c-black-100 txt-size-30-m txt-size-50\">\n                    Abstract                <\/h2>\n                <div class=\"txt-post-rtf fade-in fw-300 txt-size-14-m txt-size-20 lh-1_8 c-black-90 ltr-spc-neg-0_015\">\n                    &#8220;Blindness affects 40 million people across the world. A neuroprosthesis could one day restore functional vision in the blind. We implanted a 1024-channel prosthesis in areas V1 and V4 of the visual cortex of monkeys and used electrical stimulation to elicit percepts of dots of light (called phosphenes) on hundreds of electrodes, the locations of which matched the receptive fields of the stimulated neurons. Activity in area V4 predicted phosphene percepts that were elicited in V1. We simultaneously stimulated multiple electrodes to impose visible patterns composed of a number of phosphenes. The monkeys immediately recognized them as simple shapes, motions, or letters. These results demonstrate the potential of electrical stimulation to restore functional, life-enhancing vision in the blind.&#8221; \r\n\r\n                <\/div>\n            <\/div>\n            <div class=\"img-content fade-in\">\n                <div class=\"img-wrapper aspect-ratio-707-669\">\n                    <img width=\"707\" height=\"669\" data-src=\"https:\/\/blackrockneurotech.com\/wp-content\/uploads\/2023\/01\/years-section-img-1.png\" alt=\"\" class=\"b-lazy\">\n                <\/div>\n            <\/div>\n        <\/div>\n        <div class=\"txt-post-rtf fade-in fw-300 txt-size-14-m txt-size-18 lh-1_78 c-black-90 ltr-spc-neg-0_015\">\n            <h2>Results:<\/h2>\n<p>&nbsp;<\/p>\n<p>&#8220;Electrical stimulation of the visual cortex has long been proposed as an approach to restoring vision in blind people. Previous studies positioned electrodes on the surface of the brain and thus required delivery of relatively high currents. However, this approach limits the number of electrodes that can be safely stimulated simultaneously, and such surface electrodes activate several millimeters of cortex, which results in a low spatial resolution. Chen\u00a0<i>et al.<\/i>\u00a0demonstrated that the simultaneous stimulation of multiple intracortical electrodes in the monkey primary visual cortex gives rise to the perception of shape and successive stimulation to the perception of motion (see the Perspective by Beauchamp and Yoshor). This major improvement provides proof of concept for the use of electrical microstimulation to create a form of artificial vision in the blind.&#8221;<\/p>\n<p>Citation:<\/p>\n<p>Chen X, Wang F, Fernandez E, Roelfsema PR. Shape perception via a high-channel-count neuroprosthesis in monkey visual cortex. Science. 2020 Dec 4;370(6521):1191-1196. doi: 10.1126\/science.abd7435. PMID: 33273097.<\/p>\n<p><a href=\"https:\/\/www.science.org\/doi\/10.1126\/science.abd7435?url_ver=Z39.88-2003&amp;rfr_id=ori:rid:crossref.org&amp;rfr_dat=cr_pub%20%200pubmed\">Go to Publication <\/a><\/p>\n<p><a href=\"https:\/\/attendee.gotowebinar.com\/register\/1706997720984629007?source=Post-Webinar\">Watch the Webinar<\/a><\/p>\n        <\/div>\n    <\/div>\n<\/section>\n\n","protected":false},"template":"","stories-categories":[8],"class_list":["post-20774","application-story","type-application-story","status-publish","hentry","stories-categories-animal-research"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.0 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Shape perception via a high-channel-count neuroprosthesis in monkey visual cortex | Animal Research | Blackrock Neurotech<\/title>\n<meta name=\"description\" content=\"Blackrock Neurotech technology fuels your pioneering Animal Research. 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